I have 13.04 and I am trying to upgrade by cd to 14.04, because my update manager always says it cant find updates, but the option for upgrading is grey. what do I do?
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You can upgrade an Ubuntu release only to its successor:
- For normal releases, this means the next release, whichever it may be. For 13.04, that would be 13.10.
- For LTS Releases, this has two meanings: the normal release following it, and the next LTS release. So Ubuntu 12.04 can be upgraded to 12.10 or 14.04.
Ubuntu 13.04 cannot be upgraded to 14.04 directly. That's why the installer has greyed out the upgrade option. It will have to be upgraded to 13.10, and then upgraded to 14.04.
muru
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